The Eaton Fuller mainshaft assembly, part number S-1256 or S1256, is a direct replacement mainshaft assembly for Eaton Fuller manual transmissions. The mainshaft is a core rotating component of the transmission, carrying the main gears and transferring power through the drivetrain. This part is categorized as a manual transmission gear component, sold individually as a single-unit assembly. Pro Gear and Transmission carries genuine Eaton Fuller replacement parts for professional buyers maintaining or rebuilding heavy-duty truck transmissions. Call us to confirm proper fit for your specific transmission model and serial number before ordering.
Features
Genuine Eaton Fuller replacement mainshaft assembly
Direct replacement for Eaton Fuller manual transmission applications
Part numbers: S-1256 or S1256; also referenced as HFS-1256
Sold as a single complete assembly unit
Call Pro Gear and Transmission to verify compatibility with your transmission model
Tech Specs
- Part Number: S-1256 or S1256
- Alternate Reference: HFS-1256
- Part Type: Mainshaft Assembly
- Application: Eaton Fuller Manual Transmission
- Sold As: Each (single assembly)
